YSkullMBRSetup[.]exe

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General

Target

YSkullMBRSetup.exe
Size

1.3MB
MD5

220303eb72ebde4605116640fb719b26
SHA1

2021794facb35a7a23796e74835d8cf93882ddaf
SHA256

f081c913488c3f22b62f906dac2a82a38d085ebe1d28701f0059dfdfbf1ccf42
SHA512

dc811be33365049b32c3a47de9b4f4e4f77be0a9dfd14bfcfce92a6f575cf9bbd4aa56fcc92a3d8bf7bd21354f6530f3cc50a1f185a5953861d3a73a3f1738fc
SSDEEP

24576:TVhHvKBiZ5/pYDIVhdL6I92XqMZa4JyuQ5O3h3JMtbc:7v5/sIwdHTMtbc

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
YSkullMBRSetup.exe

Files

YSkullMBRSetup.exe
.exe windows:4 windows x86 arch:x86

68086ff8539b66ab3b5a46c3109ff414

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

AddAtomA
CloseHandle
CreateEventA
CreateFileA
CreateMutexA
CreateSemaphoreA
DeleteCriticalSection
DuplicateHandle
EnterCriticalSection
FindAtomA
GetAtomNameA
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetHandleInformation
GetLastError
GetModuleHandleW
GetProcAddress
GetProcessAffinityMask
GetStartupInfoA
GetSystemTimeAsFileTime
GetThreadContext
GetThreadPriority
GetTickCount
InitializeCriticalSection
IsDBCSLeadByteEx
LeaveCriticalSection
MultiByteToWideChar
QueryPerformanceCounter
ReleaseMutex
ReleaseSemaphore
ResetEvent
ResumeThread
SetCriticalSectionSpinCount
SetEvent
SetLastError
SetProcessAffinityMask
SetThreadContext
SetThreadPriority
SetUnhandledExceptionFilter
Sleep
SuspendThread
TerminateProcess
TlsAlloc
TlsGetValue
TlsSetValue
TryEnterCriticalSection
UnhandledExceptionFilter
VirtualProtect
VirtualQuery
WaitForMultipleObjects
WaitForSingleObject
WideCharToMultiByte
WriteFile

msvcrt

__dllonexit
__doserrno
__getmainargs
__initenv
__lconv_init
__mb_cur_max
__pioinfo
__set_app_type
__setusermatherr
_acmdln
_amsg_exit
_beginthreadex
_cexit
_endthreadex
_errno
_fdopen
_filelengthi64
_fileno
_fileno
_fmode
_fstat64
_ftime
_initterm
_iob
_lock
_lseeki64
_onexit
_read
_setjmp3
_strnicmp
_unlock
_write
_write
abort
atoi
calloc
exit
fclose
fflush
fgetpos
fopen
fprintf
fputc
fputs
fread
free
fsetpos
fwrite
getc
getenv
getwc
isspace
iswctype
localeconv
longjmp
malloc
memchr
memcmp
memmove
printf
putc
putwc
realloc
setlocale
setvbuf
signal
sprintf
strchr
strcmp
strcoll
strerror
strftime
strncmp
strxfrm
towlower
towupper
ungetc
ungetwc
vfprintf
wcscoll
wcsftime
wcslen
wcsxfrm

ntdll

NtRaiseHardError
RtlAdjustPrivilege
memcpy
memset
strlen

Sections

.text
Size: 512KB - Virtual size: 511KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 25KB - Virtual size: 25KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 33KB - Virtual size: 33KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 3KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 56B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 32B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

/4
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/19
Size: 116KB - Virtual size: 116KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/31
Size: 19KB - Virtual size: 19KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/45
Size: 25KB - Virtual size: 24KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/57
Size: 9KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/70
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/81
Size: 72KB - Virtual size: 72KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/92
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

68086ff8539b66ab3b5a46c3109ff414

Headers

File Characteristics

Imports

kernel32

msvcrt

ntdll

Sections

.text Size: 512KB - Virtual size: 511KB

.data Size: 25KB - Virtual size: 25KB

.rdata Size: 33KB - Virtual size: 33KB

.bss Size: - Virtual size: 3KB

.idata Size: 4KB - Virtual size: 3KB

.CRT Size: 512B - Virtual size: 56B

.tls Size: 512B - Virtual size: 32B

/4 Size: 2KB - Virtual size: 1KB

/19 Size: 116KB - Virtual size: 116KB

/31 Size: 19KB - Virtual size: 19KB

/45 Size: 25KB - Virtual size: 24KB

/57 Size: 9KB - Virtual size: 9KB

/70 Size: 1KB - Virtual size: 1KB

/81 Size: 72KB - Virtual size: 72KB

/92 Size: 3KB - Virtual size: 3KB

.text
Size: 512KB - Virtual size: 511KB

.data
Size: 25KB - Virtual size: 25KB

.rdata
Size: 33KB - Virtual size: 33KB

.bss
Size: - Virtual size: 3KB

.idata
Size: 4KB - Virtual size: 3KB

.CRT
Size: 512B - Virtual size: 56B

.tls
Size: 512B - Virtual size: 32B

/4
Size: 2KB - Virtual size: 1KB

/19
Size: 116KB - Virtual size: 116KB

/31
Size: 19KB - Virtual size: 19KB

/45
Size: 25KB - Virtual size: 24KB

/57
Size: 9KB - Virtual size: 9KB

/70
Size: 1KB - Virtual size: 1KB

/81
Size: 72KB - Virtual size: 72KB

/92
Size: 3KB - Virtual size: 3KB